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Electrolytic Capacitors can only be used with DC supplies because they cannot cope with AC; they are polarised and AC will cause them to blow, whether that's internal or external; in which case you've some cleaning-up to do!
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∙ 10y ago
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For 10V electrolytic capacitor how much peak to peak voltage signal can be applied?
Make sure you're using a non polarized electrolytic capacitor, otherwise it isn't going to work well. I'm not sure, but I would say you should be able to apply the same RMS AC as it is rated for DC: AC Peak - Peak = RMS AC / (2*sqrt(2))
How a can capacitor smoothen or reduce the ripple of the voltage produce by the rectifier?
Rectifiers will not give a smooth DC voltage. There are ripples in the voltage given the rectifier. So in order to smoothen the voltage we use capacitor in parallel to the rectifier output. Now lets see how the capacitor smoothen the voltage that is coming from a rectifier...... Capacitor blocks DC and allows AC...... If we take the voltage that is coming from the rectifier it has some ripples in addition to DC, these ripples can be divided in to sinusoidal wave forms ( fictitious )according to the Fourier series. So the rippled DC now divided ( fictitious ) in to a pure DC and sinusoidal AC wave forms having the frequency that is multiples of ripple frequency. Now the DC current will not pass through the capacitor as the capacitor blocks DC. But the AC will pass through it i.e the ripple wave forms that are divided ( fictitious ) in to sinusoidal AC wave forms will pass through the capacitor. So only DC current enters in to the load, which will produce a pure DC voltage drop across the load. In this manner the capacitor smoothens the voltage.
What happens to current flow in a capacitive when the DC voltage across the capacitor is approximately equal to the source voltage?
As long as you don't exceed the breakdown voltage of the capacitor ... which is marked right on it ... DC voltage on it produces NO current flow through it. Only AC 'appears' to flow through a capacitor, and even that appearance is bogus when you really get down to it.
What does an electrolytic capacitor do?
Electrolytic capacitor are used in dc power supplies to filter ac ripple . The rectifier turns ac in to pulsating dc and with a capacitor across the output it holds a charge and so pulsating dc never goes down to zero.. Salunke pratik sigma institute of engineering .vadodara
What observation is made when using a bigger value for a capacitor in a full wave bridge rectifier?
bigger capacitor value will make the discharge taking longer time and that is willmake the curve is closer to dc line which means the higher capacitor value will help to have a closer signal to the dc and reduce the ripple voltage
Why using electrolytic capacutor for dc voltage?
Electrolytic caps are polarized and come in larger voltage rating and larger cap size than other types of capacitors.
Will a capacitor lower voltage?
A: As soon as a DC voltage is applied the capacitor is a short or no voltage
How does ac dc power supplies work?
The mains to the house is an alternating current and this high voltage is stepped down using a transformer. The low voltage secondary alternating current is converted to direct current using 4 diodes wired as a bridge rectifier. The 'lumpy' direct current is smoothed using an electrolytic capacitor to smooth the resulting dc. It may need to be voltage regulated if the circuits it feeds are voltage sensitive.
Why does ac fails in capacitor?
Capacitors can pass alternating current provided the current and the voltage are within the capacitor's rating. Very often there is a dc bias voltage across the capacitor as well as the ac voltage, so the peak voltage must not exceed the limit. Electrolytic capacitors must not have a reverse voltage across them in any circumstances, because this can cause failure.
For 10V electrolytic capacitor how much peak to peak voltage signal can be applied?
Make sure you're using a non polarized electrolytic capacitor, otherwise it isn't going to work well. I'm not sure, but I would say you should be able to apply the same RMS AC as it is rated for DC: AC Peak - Peak = RMS AC / (2*sqrt(2))
How do you charge a capacitor?
You charge a capacitor by placing DC voltage across its terminal leads. Make sure when using a polarized capacitor to place positive voltage across the positive lead (the longer lead) and negative voltage across the negative lead. Also make sure that the voltage you charge the capacitor to doesn't exceeds its voltage rating.
Why capacitor in transistor amplifier circuit at input?
Because capacitor not allow to pass dc voltage,but capacitor allow ac voltage and signal.Purpose is to block dc voltage.That is coupling condenser.
How a can capacitor smoothen or reduce the ripple of the voltage produce by the rectifier?
Rectifiers will not give a smooth DC voltage. There are ripples in the voltage given the rectifier. So in order to smoothen the voltage we use capacitor in parallel to the rectifier output. Now lets see how the capacitor smoothen the voltage that is coming from a rectifier...... Capacitor blocks DC and allows AC...... If we take the voltage that is coming from the rectifier it has some ripples in addition to DC, these ripples can be divided in to sinusoidal wave forms ( fictitious )according to the Fourier series. So the rippled DC now divided ( fictitious ) in to a pure DC and sinusoidal AC wave forms having the frequency that is multiples of ripple frequency. Now the DC current will not pass through the capacitor as the capacitor blocks DC. But the AC will pass through it i.e the ripple wave forms that are divided ( fictitious ) in to sinusoidal AC wave forms will pass through the capacitor. So only DC current enters in to the load, which will produce a pure DC voltage drop across the load. In this manner the capacitor smoothens the voltage.
What happens to current flow in a capacitive when the DC voltage across the capacitor is approximately equal to the source voltage?
As long as you don't exceed the breakdown voltage of the capacitor ... which is marked right on it ... DC voltage on it produces NO current flow through it. Only AC 'appears' to flow through a capacitor, and even that appearance is bogus when you really get down to it.
What precautions should be taken when connecting an electrolytic capacitor in circuit?
Most electrolytic caps are polarized, so they will only go in a DC circuit one way - if you reverse them, they will explode (wear goggles!).
What does an electrolytic capacitor do?
Electrolytic capacitor are used in dc power supplies to filter ac ripple . The rectifier turns ac in to pulsating dc and with a capacitor across the output it holds a charge and so pulsating dc never goes down to zero.. Salunke pratik sigma institute of engineering .vadodara
What is the voltage obtained when a capacitor is placed in a dc circuit?
Eventually, the capacitor will charge to approximately the source voltage level. As this occurs, the current in the circuit will drop to near zero.
